EP1363819A1 - Electrohydraulic pressure control device - Google Patents

Electrohydraulic pressure control device

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Publication number
EP1363819A1
EP1363819A1 EP02712743A EP02712743A EP1363819A1 EP 1363819 A1 EP1363819 A1 EP 1363819A1 EP 02712743 A EP02712743 A EP 02712743A EP 02712743 A EP02712743 A EP 02712743A EP 1363819 A1 EP1363819 A1 EP 1363819A1
Authority
EP
European Patent Office
Prior art keywords
coil
coils
control device
valve
pressure control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02712743A
Other languages
German (de)
French (fr)
Other versions
EP1363819B1 (en
Inventor
Reinhold Jocham
Peter Jares
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1363819A1 publication Critical patent/EP1363819A1/en
Application granted granted Critical
Publication of EP1363819B1 publication Critical patent/EP1363819B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/3675—Electromagnetic valves specially adapted for anti-lock brake and traction control systems integrated in modulator units

Definitions

  • the invention is based on an electrohydraulic pressure control device, in particular brake-slip control device for motor vehicles, comprising one or more electromagnetically actuable hydraulic valves accommodated in a valve block, with valve domes at least partially projecting in the direction of a valve axis, which each have a coil opening in an electrical coil held by a coil carrier engage, and with contact elements projecting away from the coils and through openings in a head plate for electrical control of the coils, according to the preamble of claim 1.
  • brake-slip control device for motor vehicles comprising one or more electromagnetically actuable hydraulic valves accommodated in a valve block, with valve domes at least partially projecting in the direction of a valve axis, which each have a coil opening in an electrical coil held by a coil carrier engage, and with contact elements projecting away from the coils and through openings in a head plate for electrical control of the coils, according to the preamble of claim 1.
  • an electrohydraulic pressure control device of the type mentioned at the outset in which the coils are held by an elastic holder connected to the coil carrier, so that alignment movements of the coils take place during the assembly process can. Even after the valve domes have been inserted into the coil openings, the coils are only fixed by the elastic holder.
  • this procedure has the disadvantage that the elastic holder deforms strongly with larger axis deviations and then voltage peaks arise, which can reduce the fatigue strength of the holder.
  • brake pressure regulating devices of motor vehicles in particular are often exposed to a strong vibration load, so that vibration problems, for example in the form of resonance excitations, can arise in the presently flexible storage of the coils.
  • undesirable frictional forces arise between the coils and the valve domes due to the deformation of the elastic holder that occurs during assembly.
  • the coils are not elastically connected to the coil body during their alignment movements, they can move freely and freely according to the respective position of the valve axis of the associated one Align the valve. As a result, undesired friction and squeezing between the components are largely avoided.
  • the position-oriented receptacle on the coil carrier ensures that the contact elements of the coils are aligned in the correct angular position relative to the openings of the head plate to be placed later on the coil housing. Since the bobbins are rigidly fixed in the bobbin case without any elasticities after alignment, vibration problems that could result from overly flexible storage are excluded from the outset.
  • the coil carrier is formed by a coil housing which can be placed on the valve block and in which through-openings, which are coaxial to the valve axes, are designed as bearing sleeves, the inside diameter of which for providing movement play for the coils is greater than the outside diameter of the assigned coil and that the bearing sleeves each have an axial stop for the coils.
  • the coils can be clamped between the at least one holding-down device fixed on the coil housing and the axial stop after they have been inserted into the bearing sleeves and after they have been aligned therein.
  • the axial stop simultaneously forms an anti-rotation device for the coils and has at least one pin-shaped projection projecting radially inward from the bearing sleeve wall, which protrudes into a radially outer recess of the coil is designed to engage directly with the projection of greater radial extent.
  • Such a pair of projections / recesses therefore has a dual function in that it acts on the one hand as an axial stop and on the other hand as an anti-rotation device, as a result of which the variety of parts of the brake slip control device is advantageously reduced.
  • a further measure provides that the hold-down device is formed by the head plate which can be fastened to the coil housing with cylinder sections which project away from it in the direction of the coils and are coaxial with the valve axes and which can be brought to axial contact on the end faces of the coils.
  • FIG. 1 shows a cross section through an electrical part of a brake slip control device for motor vehicles
  • FIG. 3 shows a schematic representation of the assembly of the electrical part of the brake slip control device from FIG. 1;
  • FIG. 4 shows a plan view of a coil housing of the electrical part from FIG. 1 without coils.
  • FIG. 1 shows a brake slip control device of a motor vehicle, which consists of a hydraulic part 2 and a there is an electrical part 4.
  • the hydraulic part 2 contains a plurality of electromagnetically actuable hydraulic valves accommodated in a valve block 6 with valve domes at least partially projecting in the direction of a valve axis 8, the hydraulic valves not being shown in FIG. 1 for reasons of scale.
  • valve domes are each surrounded by an electrical coil 12, which is held by a coil carrier 10 and has a central cylindrical opening 14. Attached to the coils 12 on the head side are two pins 16, 18 projecting upwards parallel to the valve axis 8, on which the ends 20 of coil wires are helically wound, as shown in particular on the left-hand pin 18 in FIG.
  • the coil carrier is formed by a coil housing 10 which can be placed on the valve block 6, preferably in the form of an injection molding, and in which coaxial through-openings to the valve axes 8 are formed as bearing sleeves 22, in which the coils 12 are received.
  • the inner diameter of the bearing sleeves 22 is larger than the outer diameter of the associated coil 12 in order to provide movement play for the coils 12 in a plane perpendicular to the valve axes 8.
  • the coils 12 are first inserted in a position-oriented manner from above into the coil housing 10, as can be seen in particular from FIG.
  • the axial position of the coils is determined by an axial stop, which is formed, for example, by at least one pin-shaped projection 24 which projects radially inward from the bearing sleeve 22 and which can be engaged in a radially outer recess 26 of the coil 12 which is open towards the lower edge is formed, as shown in Fig.1 and Fig.4.
  • the recess 26 has a projection 24 complementary cross-section, but has a greater radial extent than this, so that a limited, but within the limits casual play of the coil 12 relative to the coil housing 10 is possible.
  • the projections 24 are preferably each arranged on the edge of each bearing sleeve 22 facing the valve block 6 and the cutouts 26 are preferably arranged on the edge of the associated coil 12 facing the valve block 6, so that the end faces 28 of the coils 12 facing the valve block 6 to the Ve ⁇ tilblock 6 facing bottom surface 30 of the coil housing 10 are flush.
  • the coil housing 10 pre-assembled with coils 12 is placed on the valve block 6, the valve domes engaging in the cylindrical openings 14 of the coils 12 from below and aligning them in the plane perpendicular to the valve axes 8 due to their freedom of movement. In this way, positional deviations of the valve axes 8 relative to one another can be compensated for.
  • the pair of projections / recesses 24, 26 assigned to each coil 12 serves not only as an axial stop, but also as an anti-rotation device for the respective coil 12, in order to be able to use it in a position-oriented manner in the coil housing 10, as can easily be imagined on the basis of FIG.
  • the angular position of the coils 12 relative to the coil housing 10 plays a role if, in a further assembly step, a head plate 32 with two through openings 34 is inserted as a cover in a head-side shoulder 36 of the coil housing 10 for the pins 16, 18 attached to the coils 12 on the head side and the through openings 34 must be aligned with the associated pins 16, 18, as shown in FIG. 3.
  • the head pins 16, 18 as a carrier of the Coil wire ends 20 can be dispensed with if the ends 20 of the coil wires themselves are sufficiently stiff to be able to protrude through the through openings 34 of the head plate 32 in a vertical position, which is possible, for example, through coil wires doubled at the end 20.
  • the head plate 32 consists of a printed circuit board carrier 38 on the valve block side, which on its side facing away from the valve block 6 carries a printed circuit board 40 with conductor tracks which are electrically contacted by the coil wire ends 20 of the coils 12 in order to be able to control the coils 12 by control electronics (FIG .2).
  • the circuit board 40 is preferably laminated onto the circuit board carrier 38.
  • the pins 16, 18 of the coils protrude through the through openings 34 of the head plate 32, the cross section of the through openings 34 being dimensioned relatively generously in order to enable unimpeded alignment of the coils 12 within the coil housing 10.
  • the ends 20 of the coil wires are unwound from the pins 16, 18 in such a way that they can be brought into electrical contact with the conductor tracks of the circuit board 40 at the intended locations and at the same time a sufficiently loose coil wire length is present is to ensure the full freedom of movement of the coils 12 within the bearing sleeves 22 without the coil wires being under tension.
  • This situation is illustrated by the pin 16 on the right in FIG. 2, the end 20 of the coil wire being soldered or bonded to the associated surface 37 of the conductor track.
  • the head plate 32 also serves as a hold-down and clamping element for the coils 12 by the circuit board 40 in the direction of Coils 12 protruding and, for example, designed as cylindrical sections 42 with the valve axes 8 hold-down elements, which are each formed on a radially inner portion of the end faces away from the valve block 6 of the coil 12 for axial contact when the head plate 32 on the coil housing 10 is fixed in the target position, for example by screw connections.
  • the coils 12 are positively and non-positively clamped after their alignment between the head plate 32 and the axial stops of the coil housing 10 designed as projections 24, the positive engagement resulting from the engagement of the projections 24 with play in the associated recesses 26 and that after Valve axes 8 aligned position of the coils 12 is then non-positively and rigidly maintained by the axial pressure of the head plate 32.
  • the electrical part 4 of the brake slip control device 1 is closed by a cover 46 placed on the coil housing 10 (FIG. 3).

Abstract

The invention relates to an electrohydraulic pressure control device, in particular a brake-slip control device (1) for motor vehicles. The inventive device comprises one or more electromagnetically actuatable hydraulic valves, which are accommodated in a valve block (6) and which are provided with valve domes. Said valve domes at least partially project above the valve block (6) in the direction of a valve axis (8) and each engages inside a coil opening (14) of an electric coil (12) held by a coil support (10). The hydraulic valves are also provided with contact elements (20), which project away from the coils (12) and through openings (34) of a top plate (32) and which are provided for electrically controlling the coils (12). The invention provides that at least some of the coils (12) are held with forceless motional play, however, in a position-oriented manner on the coil support (10) in a plane extending perpendicular to the valve axes (8), and after their alignment, which results from the valve domes engaging inside the associated coil openings (14), they can be immovably fixed in the aligned position.

Description

Elektrohydraulische Druckregelvorrichtung Electro-hydraulic pressure control device
Beschreibungdescription
Stand der TechnikState of the art
Die Erfindung geht aus von einer elektrohydraulischen Druckregelvorrichtung, insbesondere Bremsschiupfregelvorrichtung für Kraftfahrzeuge, beinhaltend ein oder mehrere elektromagnetisch betätigbare, in einem Ventilblock aufgenommene Hydraulikventile mit den Ventilblock in Richtung einer Ventilachse zumindest teilweise überragenden Ventildomen, welche in je eine Spulenöffnung einer von einem Spulenträger gehaltenen elektrischen Spule eingreifen, und mit von den Spulen weg und durch Öffnungen einer Kopfplatte hindurch ragenden Kontaktelementen zur elektrischen Ansteuerung der Spulen, gemäß dem Oberbegriff des Anspruchs 1.The invention is based on an electrohydraulic pressure control device, in particular brake-slip control device for motor vehicles, comprising one or more electromagnetically actuable hydraulic valves accommodated in a valve block, with valve domes at least partially projecting in the direction of a valve axis, which each have a coil opening in an electrical coil held by a coil carrier engage, and with contact elements projecting away from the coils and through openings in a head plate for electrical control of the coils, according to the preamble of claim 1.
Bei der Herstellung solcher Druckregelvorrichtungen ergibt sich das Problem, daß die Ventildome in die Spulenöffnungen der am Spulenträger gehaltenen Spulen sowie die Kontaktelemente in die Off- nungen der Kopfplatte eingeführt werden müssen, wobei eng tolerierte Passungsspiele erforderlich sind, weil bereits ein geringer Achsversatz der Hydraulikventile den Montagevorgang der Spulen und der Kopfplatte erschweren.When producing such pressure regulating devices, the problem arises that the valve domes in the coil openings of the coils held on the coil carrier and the contact elements in the off- The head plate must be inserted, with tight tolerances being necessary because even a small axial offset of the hydraulic valves complicates the assembly process of the coils and the head plate.
Um diesem Problem zu begegnen, wird gemäß der DE 41 00 967 A1 eine elektrohydraulische Druckregelvorrichtung der eingangs erwähnten Art vorgeschlagen, bei welcher die Spulen von einer mit dem Spulenträger in Verbindung stehenden elastischen Hal- terung gehalten sind, damit während des Montagevorgangs Ausrichtbewegungen der Spulen stattfinden können. Die Fixierung der Spulen am Spulenträger erfolgt auch nach Einführen der Ventildome in die Spulenöffnungen ausschließlich durch die elastische Halterung. Diese Vorgehensweise hat jedoch den Nachteil, daß sich die elastische Halterung bei größeren Achsabweichungen stark verformt und dann Spannungsspitzen entstehen, welche die Dauerfestigkeit der Halterung herabsetzen können. Darüber hinaus sind vor allem Bremsdruckregelvorrichtungen von Kraftfahrzeugen oft einer starken Schwingungsbelastung ausgesetzt, so daß sich bei der vorliegend nachgiebigen Lagerung der Spulen Schwingungsprobleme beispielsweise in Form von Resonanzanregungen ergeben können. Schließlich entstehen aufgrund der während der Montage auftretenden Verformung der elastischen Halterung unerwünschte Reibkräfte zwischen den Spulen und den Ventildomen.In order to counter this problem, according to DE 41 00 967 A1, an electrohydraulic pressure control device of the type mentioned at the outset is proposed, in which the coils are held by an elastic holder connected to the coil carrier, so that alignment movements of the coils take place during the assembly process can. Even after the valve domes have been inserted into the coil openings, the coils are only fixed by the elastic holder. However, this procedure has the disadvantage that the elastic holder deforms strongly with larger axis deviations and then voltage peaks arise, which can reduce the fatigue strength of the holder. In addition, brake pressure regulating devices of motor vehicles in particular are often exposed to a strong vibration load, so that vibration problems, for example in the form of resonance excitations, can arise in the presently flexible storage of the coils. Finally, undesirable frictional forces arise between the coils and the valve domes due to the deformation of the elastic holder that occurs during assembly.
Vorteile der ErfindungAdvantages of the invention
Da die Spulen während ihrer Ausrichtbewegungen an den Spulenkörper nicht elastisch angebunden sind, können sie sich frei und zwangslos nach der jeweiligen Lage der Ventilachse des zugeordneten Ventils ausrichten. Hierdurch werden unerwünschte Reibungen und Verzwängungen zwischen den Bauteilen weitgehend vermieden. Die lageorientierte Aufnahme am Spulenträger gewährleistet, daß die Kontaktelemente der Spulen in der korrekten Winkelposition relativ zu den Öffnungen der später auf das Spulengehäuse aufzusetzenden Kopfplatte ausgerichtet sind. Da die Spulen nach dem Ausrichten im Spulengehäuse ohne Elastizitäten starr festgelegt sind, werden Schwingungsprobleme, die sich aus einer zu nachgiebigen Lagerung ergeben könnten, von vomeherein ausgeschlossen.Since the coils are not elastically connected to the coil body during their alignment movements, they can move freely and freely according to the respective position of the valve axis of the associated one Align the valve. As a result, undesired friction and squeezing between the components are largely avoided. The position-oriented receptacle on the coil carrier ensures that the contact elements of the coils are aligned in the correct angular position relative to the openings of the head plate to be placed later on the coil housing. Since the bobbins are rigidly fixed in the bobbin case without any elasticities after alignment, vibration problems that could result from overly flexible storage are excluded from the outset.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der Erfindung möglich.Advantageous further developments and improvements of the invention are possible through the measures listed in the subclaims.
Eine besonders zu bevorzugende Weiterbildung der Erfindung sieht vor, daß der Spulenträger durch ein auf den Ventilblock aufsetzbares Spulengehäuse gebildet wird, in welchem zu den Ventilachsen koaxiale Durchgangsöffnungen als Lagerhülsen ausgebildet sind, deren Innendurchmesser zur Bereitstellung von Bewegungsspiel für die Spulen größer ist als der Außendurchmesser der zugeordneten Spule und daß die Lagerhülsen je einen axialen Anschlag für die Spulen aufweisen.A particularly preferred development of the invention provides that the coil carrier is formed by a coil housing which can be placed on the valve block and in which through-openings, which are coaxial to the valve axes, are designed as bearing sleeves, the inside diameter of which for providing movement play for the coils is greater than the outside diameter of the assigned coil and that the bearing sleeves each have an axial stop for the coils.
Eine weitere zu bevorzugende Maßnahme sieht vor, daß die Spulen nach dem Einsetzen in die Lagerhülsen und nach ihrer Ausrichtung in diesen zwischen wenigstens einem am Spulengehäuse festgelegten Niederhalter und dem axialen Anschlag klemmbar sind.Another measure to be preferred provides that the coils can be clamped between the at least one holding-down device fixed on the coil housing and the axial stop after they have been inserted into the bearing sleeves and after they have been aligned therein.
Gemäß einer Weiterbildung bildet der axiale Anschlag zugleich eine Verdrehsicherung für die Spulen und weist wenigstens einen von der Lagerhülsenwand nach radial innen ragenden stiftförrnigen Vorsprung auf, der in eine radial äußere Aussparung der Spule mit im Ver- gleich zum Vorsprung größerer radialer Erstreckung eingreifbar ausgebildet ist. Ein solches Vorsprung-/Aussparungspaarung hat daher Doppelfunktion, indem es einerseits als axialer Anschlag und andererseits als Verdrehsicherung wirkt, wodurch sich die Teilevielfalt der Brems- schlupfregelvorrichtung in vorteilhafter Weise reduziert.According to a further development, the axial stop simultaneously forms an anti-rotation device for the coils and has at least one pin-shaped projection projecting radially inward from the bearing sleeve wall, which protrudes into a radially outer recess of the coil is designed to engage directly with the projection of greater radial extent. Such a pair of projections / recesses therefore has a dual function in that it acts on the one hand as an axial stop and on the other hand as an anti-rotation device, as a result of which the variety of parts of the brake slip control device is advantageously reduced.
Eine weitere Maßnahme sieht vor, daß der Niederhalter durch die am Spulengehäuse befestigbare Kopfplatte mit von ihr in Richtung der Spulen weg ragenden und mit den Ventilachsen koaxialen Zylinderabschnitten gebildet wird, welche an den Stirnflächen der Spulen zur axialen Anlage bringbar ausgebildet sind.A further measure provides that the hold-down device is formed by the head plate which can be fastened to the coil housing with cylinder sections which project away from it in the direction of the coils and are coaxial with the valve axes and which can be brought to axial contact on the end faces of the coils.
Zeichnungendrawings
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. In den Zeichnungen zeigtAn embodiment of the invention is shown in the drawing and explained in more detail in the following description. In the drawings shows
Fig.1 einen Querschnitt durch einen elektrischen Teil einer Brems- schlupfregelvorrichtung für Kraftfahrzeuge;1 shows a cross section through an electrical part of a brake slip control device for motor vehicles;
Fig.2 die Einzelheit X von Fig.1 ;2 shows the detail X of Fig.1;
Fig.3 eine schematische Darstellung der Montage des elektrischen Teils der Bremsschlupfregelvorrichtung von Fig.1 ;3 shows a schematic representation of the assembly of the electrical part of the brake slip control device from FIG. 1;
Fig.4 eine Draufsicht auf ein Spulengehäuse des elektrischen Teils von Fig.1 ohne Spulen.4 shows a plan view of a coil housing of the electrical part from FIG. 1 without coils.
Beschreibung des AusführungsbeispielsDescription of the embodiment
In Fig.1 ist mit 1 eine Bremsschlupfregelvorrichtung eines Kraftfahrzeugs dargestellt, welche aus einem hydraulischen Teil 2 und ei- nem elektrischen Teil 4 besteht. Der hydraulische Teil 2 beinhaltet mehrere elektromagnetisch betätigbare, in einem Ventilblock 6 aufgenommene Hydraulikventile mit den Ventilblock 6 in Richtung einer Ventilachse 8 zumindest teilweise überragenden Ventildomen, wobei die Hydraulikventile in Fig.1 aus Maßstabsgründen nicht dargestellt sind.1 shows a brake slip control device of a motor vehicle, which consists of a hydraulic part 2 and a there is an electrical part 4. The hydraulic part 2 contains a plurality of electromagnetically actuable hydraulic valves accommodated in a valve block 6 with valve domes at least partially projecting in the direction of a valve axis 8, the hydraulic valves not being shown in FIG. 1 for reasons of scale.
Die Ventildome sind von je einer von einem Spulenträger 10 gehaltenen elektrischen Spule 12 umschlossen, die eine mittige zylindrische Öffnung 14 aufweist. An die Spulen 12 sind kopfseitig je zwei parallel zur Ventilachse 8 nach oben ragende Stifte 16, 18 angesetzt, auf welchen die Enden 20 von Spulendrähten schraubenförmig aufgewik- kelt sind, wie insbesondere am in Fig.2 linken Stift 18 dargestellt istThe valve domes are each surrounded by an electrical coil 12, which is held by a coil carrier 10 and has a central cylindrical opening 14. Attached to the coils 12 on the head side are two pins 16, 18 projecting upwards parallel to the valve axis 8, on which the ends 20 of coil wires are helically wound, as shown in particular on the left-hand pin 18 in FIG
Der Spulenträger wird durch ein auf den Ventilblock 6 aufsetzbares, vorzugsweise als Spritzgußformling ausgeführtes Spulengehäuse 10 gebildet, in welchem zu den Ventilachsen 8 koaxiale Durch- gangsöffnungen als Lagerhülsen 22 ausgebildet sind, in welchen die Spulen 12 aufgenommen sind. Der Innendurchmesser der Lagerhülsen 22 ist zur Bereitstellung von Beweguπgsspiel für die Spulen 12 in einer Ebene senkrecht zu den Ventilachsen 8 größer als der Außendurchmesser der zugeordneten Spule 12.The coil carrier is formed by a coil housing 10 which can be placed on the valve block 6, preferably in the form of an injection molding, and in which coaxial through-openings to the valve axes 8 are formed as bearing sleeves 22, in which the coils 12 are received. The inner diameter of the bearing sleeves 22 is larger than the outer diameter of the associated coil 12 in order to provide movement play for the coils 12 in a plane perpendicular to the valve axes 8.
Zur Montage des elektrischen Teils 4 der Bremsschlupfregelvorrichtung 1 werden zunächst die Spulen 12 von oben in das Spulengehäuse 10 lageorientiert eingesetzt, wie insbesondere aus Fig.3 hervorgeht. Die axiale Position der Spulen wird durch je einen axialen Anschlag festgelegt, der beispielsweise durch wenigstens je einen von der Lagerhülse 22 nach radial innen ragenden stiftförmigen Vorsprung 24 gebildet wird, der in eine radial äußere, zum unteren Rand hin offene Aussparung 26 der Spule 12 eingreifbar ausgebildet ist, wie Fig.1 und Fig.4 zeigt. Die Aussparung 26 hat einen zum Vorsprung 24 kom- plementären Querschnitt, weist allerdings eine größere radiale Erstrek- kung als dieser auf, so daß ein begrenztes, aber innerhalb der Grenzen zwangloses Bewegungsspiel der Spule 12 relativ zum Spulengehäuse 10 möglich ist. Die Vorsprünge 24 sind vorzugsweise jeweils an dem zum Ventilblock 6 weisenden Rand einer jeden Lagerhülse 22 und die Aussparungen 26 vorzugsweise jeweils an dem zum Ventilblock 6 weisenden Rand der zugeordneten Spule 12 angeordnet, so daß die zum Ventilblock 6 weisenden Stirnflächen 28 der Spulen 12 mit der zum Veπtilblock 6 weisenden Bodenfläche 30 des Spuleπgehäuses 10 bündig sind.To assemble the electrical part 4 of the brake slip control device 1, the coils 12 are first inserted in a position-oriented manner from above into the coil housing 10, as can be seen in particular from FIG. The axial position of the coils is determined by an axial stop, which is formed, for example, by at least one pin-shaped projection 24 which projects radially inward from the bearing sleeve 22 and which can be engaged in a radially outer recess 26 of the coil 12 which is open towards the lower edge is formed, as shown in Fig.1 and Fig.4. The recess 26 has a projection 24 complementary cross-section, but has a greater radial extent than this, so that a limited, but within the limits casual play of the coil 12 relative to the coil housing 10 is possible. The projections 24 are preferably each arranged on the edge of each bearing sleeve 22 facing the valve block 6 and the cutouts 26 are preferably arranged on the edge of the associated coil 12 facing the valve block 6, so that the end faces 28 of the coils 12 facing the valve block 6 to the Veπtilblock 6 facing bottom surface 30 of the coil housing 10 are flush.
Gemäß einem weiteren Montageschritt wird das mit Spulen 12 vormontierte Spulengehäuse 10 auf den Ventilblock 6 aufgesetzt, wobei die Ventildome von unten in die zylindrischen Öffnungen 14 der Spulen 12 eingreifen und diese aufgrund ihres Bewegungsspielraumes in der Ebene senkrecht zu den Ventilachsen 8 ausrichten. Auf diese Weise können Lageabweichungen der Ventilachsen 8 relativ zueinander ausgeglichen werden.According to a further assembly step, the coil housing 10 pre-assembled with coils 12 is placed on the valve block 6, the valve domes engaging in the cylindrical openings 14 of the coils 12 from below and aligning them in the plane perpendicular to the valve axes 8 due to their freedom of movement. In this way, positional deviations of the valve axes 8 relative to one another can be compensated for.
Das jeder Spule 12 zugeordnete Vorsprung-/Aussparungspaar 24, 26 dient nicht nur als axialer Anschlag, sondern auch als Verdrehsicherung für die jeweilige Spule 12, um sie lageorientiert in das Spulengehäuse 10 einsetzen zu können, wie anhand von Fig.3 leicht vorstellbar ist. Die Winkellage der Spulen 12 relativ zum Spulengehäuse 10 spielt eine Rolle, wenn in einem weiteren Montageschritt eine Kopfplatte 32 mit je zwei Durchgangsöffnungen 34 für die an die Spulen 12 kopfseitig angesetzten Stifte 16, 18 als Deckel in einen kopfseitigen Absatz 36 des Spulengehäuses 10 eingesetzt wird und die Durch- gangsöffnungen 34 mit den zugeordneten Stiften 16, 18 fluchten müssen, wie Fig.3 zeigt. Auf die kopfseitigen Stifte 16, 18 als Träger der Spulendrahtenden 20 kann verzichtet werden, wenn die Enden 20 der Spulendrähte selbst ausreichend steif sind, um in vertikaler Stellung durch die Durchgangsöffnungen 34 der Kopfplatte 32 ragen zu können, was beispielsweise durch am Ende 20 doppelt gewickelte Spulendrähte möglich ist.The pair of projections / recesses 24, 26 assigned to each coil 12 serves not only as an axial stop, but also as an anti-rotation device for the respective coil 12, in order to be able to use it in a position-oriented manner in the coil housing 10, as can easily be imagined on the basis of FIG. The angular position of the coils 12 relative to the coil housing 10 plays a role if, in a further assembly step, a head plate 32 with two through openings 34 is inserted as a cover in a head-side shoulder 36 of the coil housing 10 for the pins 16, 18 attached to the coils 12 on the head side and the through openings 34 must be aligned with the associated pins 16, 18, as shown in FIG. 3. On the head pins 16, 18 as a carrier of the Coil wire ends 20 can be dispensed with if the ends 20 of the coil wires themselves are sufficiently stiff to be able to protrude through the through openings 34 of the head plate 32 in a vertical position, which is possible, for example, through coil wires doubled at the end 20.
Die Kopfplatte 32 besteht aus einem ventilblockseitigen Leiterplattenträger 38, welcher auf seiner vom Ventilblock 6 weg weisenden Seite eine Leiterplatte 40 mit Leiterbahnen trägt, welche von den Spulendrahtenden 20 der Spulen 12 elektrisch kontaktiert sind, um die Spulen 12 von einer Regelelektronik ansteuern zu können (Fig.2). Die Leiterplatte 40 ist vorzugsweise auf den Leiterplattenträger 38 auflaminiert. Die Stifte 16, 18 der Spulen ragen durch die Durchgaπgsöffπun- gen 34 der Kopfplatte 32 hindurch, wobei der Querschnitt der Durch- gangsöffnungen 34 relativ großzügig dimensioniert ist, um eine ungehinderte Ausrichtung der Spulen 12 innerhalb des Spulengehäuses 10 zu ermöglichen. Nach dem Aufsetzen der Kopfplatte 32 auf das Spulengehäuse 10 werden die Enden 20 der Spuleπdrähte von den Stiften 16, 18 derart abgewickelt, daß sie an den vorgesehenen Stellen mit den Leiterbahnen der Leiterplatte 40 in elektrischen Kontakt bringbar sind und zugleich noch eine ausreichend lose Spulendrahtlänge vorhanden ist, um den vollen Bewegungsspielraum der Spulen 12 innerhalb der Lagerhülsen 22 zu gewährleisten, ohne daß dabei die Spulendrähte unter Zugspannung geraten. Diese Situation ist anhand des in Fig.2 rechten Stiftes 16 veranschaulicht, wobei das Ende 20 des Spulendrahtes auf die zugeordnete Fläche 37 der Leiterbahn gelötet oder gebondet ist.The head plate 32 consists of a printed circuit board carrier 38 on the valve block side, which on its side facing away from the valve block 6 carries a printed circuit board 40 with conductor tracks which are electrically contacted by the coil wire ends 20 of the coils 12 in order to be able to control the coils 12 by control electronics (FIG .2). The circuit board 40 is preferably laminated onto the circuit board carrier 38. The pins 16, 18 of the coils protrude through the through openings 34 of the head plate 32, the cross section of the through openings 34 being dimensioned relatively generously in order to enable unimpeded alignment of the coils 12 within the coil housing 10. After the head plate 32 has been placed on the coil housing 10, the ends 20 of the coil wires are unwound from the pins 16, 18 in such a way that they can be brought into electrical contact with the conductor tracks of the circuit board 40 at the intended locations and at the same time a sufficiently loose coil wire length is present is to ensure the full freedom of movement of the coils 12 within the bearing sleeves 22 without the coil wires being under tension. This situation is illustrated by the pin 16 on the right in FIG. 2, the end 20 of the coil wire being soldered or bonded to the associated surface 37 of the conductor track.
Die Kopfplatte 32 dient zugleich als Niederhalter und Klemmelement für die Spulen 12, indem die Leiterplatte 40 in Richtung der Spulen 12 weg ragende und beispielsweise als mit den Ventilachsen 8 koaxiale Zylinderabschnitte 42 ausgebildete Niederhalterelemente aufweist, welche je an einem radial inneren Abschnitt der vom Ventilblock 6 weg weisenden Stirnflächen 44 der Spulen 12 zur axialen Anlage bringbar ausgebildet sind, wenn die Kopfplatte 32 auf dem Spulengehäuse 10 in Sollage befestigt ist, beispielsweise durch Schraubverbindungen. Hierdurch werden die Spulen 12 nach ihrem Ausrichten zwischen der Kopfplatte 32 und den als Vorsprünge 24 ausgebildeten axialen Anschlägen des Spulengehäuses 10 form- und kraftschlüssig geklemmt, wobei sich der Formschluß aufgrund des spielbehafteten Eingriffs der Vorsprünge 24 in die zugeordneten Aussparungen 26 ergibt und die nach den Ventilachsen 8 ausgerichtete Lage der Spulen 12 dann durch den axialen Druck der Kopf platte 32 kraftschlüssig und starr aufrechterhalten wird. Abschließend wird der elektrische Teil 4 der Bremsschlupfregelvorrichtung 1 durch einen auf das Spulengehäuse 10 aufgesetzten Deckel 46 verschlossen (Fig.3). The head plate 32 also serves as a hold-down and clamping element for the coils 12 by the circuit board 40 in the direction of Coils 12 protruding and, for example, designed as cylindrical sections 42 with the valve axes 8 hold-down elements, which are each formed on a radially inner portion of the end faces away from the valve block 6 of the coil 12 for axial contact when the head plate 32 on the coil housing 10 is fixed in the target position, for example by screw connections. As a result, the coils 12 are positively and non-positively clamped after their alignment between the head plate 32 and the axial stops of the coil housing 10 designed as projections 24, the positive engagement resulting from the engagement of the projections 24 with play in the associated recesses 26 and that after Valve axes 8 aligned position of the coils 12 is then non-positively and rigidly maintained by the axial pressure of the head plate 32. Finally, the electrical part 4 of the brake slip control device 1 is closed by a cover 46 placed on the coil housing 10 (FIG. 3).

Claims

Patentansprüche claims
Elektrohydraulische Druckregelvorrichtung, insbesondere Bremsschlupfregelvorrichtung (1) für Kraftfahrzeuge, beinhaltend ein oder mehrere elektromagnetisch betätigbare, in einem Ventilblock (6) aufgenommene Hydraulikventile mit den Ventilblock (6) in Richtung einer Ventilachse (8) zumindest teilweise überragenden Ventildomen, welche in je eine Spulenöffnung (14) einer von einem Spulenträger (10) gehaltenen elektrischen Spule (12) eingreifen, und mit von den Spulen (12) weg und durch Öffnungen (34) einer Kopfplatte (32) hindurch ragenden Kontaktelementen (20) zur elektrischen Ansteuerung der Spulen (12), dadurch gekennzeichnet, daß zumindest einige der Spulen (12) am Spulenträger (10) in einer Ebene senkrecht zu den Ventilachsen (8) mit zwanglosem Bewegungsspiel aber lageorientiert gehalten und nach ihrer durch Eingriff der Ventildome in die zugeordneten Spu- lenöffnungen (14) erfolgten Ausrichtung in der ausgerichteten Position starr festlegbar sind.Electrohydraulic pressure control device, in particular brake slip control device (1) for motor vehicles, comprising one or more electromagnetically actuable hydraulic valves accommodated in a valve block (6) with the valve block (6) in the direction of a valve axis (8) at least partially projecting valve domes, each of which extends into a coil opening ( 14) an electrical coil (12) held by a coil carrier (10) engages, and with contact elements (20) projecting away from the coils (12) and through openings (34) in a head plate (32) for the electrical control of the coils (12 ), characterized in that at least some of the coils (12) on the coil carrier (10) are held in a plane perpendicular to the valve axes (8) with casual movement play but oriented in position and after their engagement by the valve domes in the associated coil openings (14) alignment can be rigidly determined in the aligned position.
Druckregelvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß der Spulenträger durch ein auf den Ventilblock (6) aufsetzbares Spulengehäuse (10) gebildet wird, in welchem zu den Ventilachsen (8) koaxiale Durchgangsöffnungen als Lagerhülsen (22) ausgebildet sind, deren Innendurchmesser zur Bereitstellung von Bewegungsspiel für die Spulen (12) größer ist als der Außendurchmesser der zugeordneten Spule (12) und daß die Lagerhülsen (22) je einen axialen Anschlag (24) für die Spulen (12) aufweisen. Pressure control device according to Claim 1, characterized in that the coil carrier is formed by a coil housing (10) which can be placed on the valve block (6) and in which through-openings which are coaxial with the valve axes (8) are designed as bearing sleeves (22), the inside diameter of which for providing Play for the coils (12) is greater than the outer diameter of the associated coil (12) and that the bearing sleeves (22) each have an axial stop (24) for the coils (12).
3. Druckregelvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Spulen (12) nach dem Einsetzen in die Lagerhülsen (22) und nach ihrer Ausrichtung in diesen zwischen wenigstens einem am Spulengehäuse (10) festgelegten Niederhalter (32) und dem axialen Anschlag (24) klemmbar sind.3. Pressure control device according to claim 2, characterized in that the coils (12) after insertion into the bearing sleeves (22) and after their alignment in this between at least one on the coil housing (10) fixed hold-down (32) and the axial stop (24th ) can be clamped.
4. Druckregelvorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der axiale Anschlag zugleich eine Verdrehsicherung für die Spulen (12) bildet und wenigstens einen von der Lagerhülse (22) nach radial innen ragenden stiftförmigen Vorsprung (24) aufweist, der in eine radial äußere Aussparung (26) der Spule (12) mit im Vergleich zum Vorsprung (24) größerer radialer Erstreckung eingreifbar ausgebildet ist.4. Pressure control device according to claim 3, characterized in that the axial stop also forms an anti-rotation device for the coils (12) and has at least one of the bearing sleeve (22) projecting radially inward pin-shaped projection (24) which in a radially outer recess (26) of the coil (12) is designed such that it can be engaged with a greater radial extension than the projection (24).
5. Druckregelvorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Vorsprung (24) jeweils an dem zum Ventilblock (6) weisenden Rand einer jeden Lagerhülse (22) und die Aussparung (26) an dem zum Ventilblock (6) weisenden Rand der zugeordneten Spule (12) angeordnet ist.5. Pressure control device according to claim 4, characterized in that the projection (24) on the valve block (6) facing edge of each bearing sleeve (22) and the recess (26) on the valve block (6) facing edge of the associated coil (12) is arranged.
6. Druckregelvorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die zum Ventilblock (6) weisende Stirnfläche (28) zumindest einiger der Spulen (12) mit der zum Ventilblock (6) weisenden Bodenfläche (30) des Spulengehäuses (10) bündig ist.6. Pressure control device according to claim 5, characterized in that the end face (28) facing the valve block (6) of at least some of the coils (12) is flush with the bottom face (30) of the spool housing (10) facing the valve block (6).
7. Druckregelvorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß das Spulengehäuse (10) durch einen Spritz- gußformling gebildet wird. 7. Pressure control device according to one of claims 2 to 6, characterized in that the coil housing (10) is formed by an injection molding.
8. Druckregelvorrichtung nach einem der Ansprüche 3 bis 7, dadurch gekennzeichnet, daß der Niederhalter durch die am Spulengehäuse (10) befestigbare Kopfplatte (32) mit von dieser in Richtung der Spulen (12) weg ragenden und mit den Ventilachsen (8) koaxialen Zylinderabschnitten (42) gebildet wird, welche an den vom Ventilblock (6) weg weisenden Stirnflächen (44) der Spulen (12) zur axialen Anlage bringbar ausgebildet sind.8. Pressure control device according to one of claims 3 to 7, characterized in that the hold-down device by the coil housing (10) attachable head plate (32) with this in the direction of the coils (12) projecting away and with the valve axes (8) coaxial cylinder sections (42) is formed, which on the end faces (44) facing away from the valve block (6) of the coils (12) can be brought into axial contact.
9. Druckregelvorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Kopfplatte (32) durch eine auf einen Leiterplattenträger (38) auflaminierte Leiterplatte (40) mit von Spulendrahtenden (20) der Spulen (12) kontaktierten Leiterbahnen gebildet wird.9. Pressure control device according to claim 8, characterized in that the top plate (32) is formed by a on a circuit board carrier (38) laminated circuit board (40) with the coil wire ends (20) of the coils (12) contacted conductor tracks.
10. Druckregelvorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß in der Kopfplatte (32) je Spule zwei Durchgangsöffnungen (34) für an die Spulen (12) kopfseitig angesetzte und die Kopfplatte (32) überragende Stifte (16, 18) ausgebildet sind, um welche die Enden (20) der Spulendrähte schraubenförmig gewickelt sind.10. Pressure control device according to claim 9, characterized in that in the head plate (32) two coils per coil (34) for the coils (12) attached to the head and the head plate (32) projecting pins (16, 18) are formed which the ends (20) of the coil wires are wound helically.
11. Druckregelvorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Enden (20) der Spulendrähte von den Stiften (16, 18) derart abwickelbar sind, daß sie an den vorgesehenen Stellen mit den Leiterbahnen in elektrischen Kontakt bringbar und zugleich noch eine ausreichend lose Spulendrahtlänge vorhanden ist, um den vollen Bewegungsspielraum der Spulen (12) innerhalb der Lagerhülsen (22) zu gewährleisten, ohne daß die Spulendrähte unter Zugspannung geraten. 11. Pressure control device according to claim 10, characterized in that the ends (20) of the coil wires from the pins (16, 18) can be unwound in such a way that they can be brought into electrical contact with the conductor tracks at the intended locations and at the same time have a sufficiently loose coil wire length is present to ensure the full freedom of movement of the coils (12) within the bearing sleeves (22) without the coil wires coming under tension.
EP02712743A 2001-02-21 2002-02-05 Electrohydraulic pressure control device Expired - Lifetime EP1363819B1 (en)

Applications Claiming Priority (3)

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DE10108208A DE10108208A1 (en) 2001-02-21 2001-02-21 Electro-hydraulic pressure control device
DE10108208 2001-02-21
PCT/DE2002/000403 WO2002066305A1 (en) 2001-02-21 2002-02-05 Electrohydraulic pressure control device

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JP4308531B2 (en) 2009-08-05
DE10108208A1 (en) 2002-08-22
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WO2002066305A1 (en) 2002-08-29
JP2004517781A (en) 2004-06-17
US6935706B2 (en) 2005-08-30

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